( ^8 )

the Former: But how, Thk or That, (hall bc so Managed, at to be putineo a Lamp, and chis Lamp Perpetually fupplied, and Placed wherever itfhall be De (i red ; as it ftems the Lampt of the Ancients might; this Firebeing sometimes found in Little Pots, Glaffes , or Umes, without any siich,

Du Ilus to them, as we required at Pitchsord, or might do here ; is a Diffi-culty perhaps not so eahly Conquertd. To which I muli: confess that Ihave only this to say, that unless there can be a Preparation Cbymicallymade out of these Bituminous Materials, which thus naturally Take Fire ofthcmselves, or Preserve it without a Wick, a small Quantiry whereof (hallmaintain so Tenuious a Fiam« as that there (hall be no Considerable(Konsumption of the matter in many Tears (such as the Flame over theTfel/ui. n ' Will» and Eartb about it, in one Mr. Hawklefs ground is Lancaßxre,

sat.vm. that (like the Fire of Plato) only Shinet .and does not Bum) wc

muli be contented to be Tyed to the Places where these Materialsare.

But if we can be Content to quit these Materials, and to think that theseLamps fas many have done) did not Sbtne or Burn for all the Time theywere Inclosed in those Tombs, but were only Inkmdled by the Admlffion ofAir whenOpened, 1 havethought of a way not at ali Lyable to any of theDefects or Inconvenientes of the Two Former Ways; whercby a Glafs ofLiquor, inclosed in another (like the Urns of Olybius) upon imniifllon ofExttrnal Air, (hall certainly Sbtne, though it did not so besore. And ’tisthis: take a finali Phial, into which put a little of the Liquid Phosphorus(which you all know, if the Phial be Sropr, Shtnes not at ali ;J Include thisin the Recipient of an Air-Pumf , out of which if the Air be well Exhaufi-td, the Solid Phosphorus it seif will leave o SShining in io hours time,thoughin the Summer-Öuaner, and the Liquid in Fewer ; so that it (hall (hine nomote, than when the Bottle containing it is dopt with a Cork. Now letsuch an Exhaußed Recipient, with the included Phosphorus, be placed in aTomb or Fault, which are commonly Dark, and if ever found, and the O ut-er Glaß broken, (as usually such things are, by Ignorant Men imployed inDigging) Poseibly there will appear, upon immiffion of the Air, as good aPerpetual Lamp , a- forne that have been found in the Stpulcbres of the An-Gents ; though in all probability of a Different Kind, from all, or Most ofthem.

.AnJtc-Mmtnt III. M. Dalesme has found out a Machine , which though very Littlec'önsim'es an< ^ P®n*ble, Conßtmes all the Smoak of all sons of Wood whatsoever;Sinoak; by M- Ltid that so, that the most Curious Eye cannot Difcover it in the Room,juftet. n. ii-, nor the nicest N ose Smeli it, altho’ the Fire be perfectly Open. This En-e ' 1 ' gine is composedof several Hoops of Hammered Iron , of about 4 or 5 In-

ches Diameter, which (hüt one into the other: It stands uprjght in the Mid-■fig. 77. die of the Room, upon a fort of Trevet mide on Purpose ; A is the placewhere rhe Fire is made, where if you put little pieces of Wood , it will notmake the lea st Smoak , neither at A. nor B. Over which you cannot holdyour Hand within Half a Foot, there comes out fo great a Hcat, If you

take